Somehow an issue was closed 3 times in a row; that shouldn't be possible. github.com/shurcooL/issuesapp#32

See https://src.sourcegraph.com/sourcegraph@master/.tracker/274:

I was able to reproduce this in https://src.sourcegraph.com/issues-playground/.tracker/27.

I know what the issue is, I'll fix it quickly.

Fixed issue via cb433e80 (the problem was that I forgot to go generate and update assets, and a new template was missing, causing the frontend to have an error).

Also improved service to be more robust and avoid creating multiple false events when state doesn't actually change, in 742ba616.